Combination lamp backplate and support arm



FIG. 1 is a left side elevational view of the combination lamp backplate and support arm in accordance with the design, illustrated in an environment of a lamp, the right side being a mirror image thereof;

FIG. 2 is a front side elevational view of the combination lamp backplate and support arm in accordance with the design; and

FIG. 3 is a rear side elevational view of the combination lamp backplate and support arm in accordance with the design;

FIG. 4 is a top plan view of the combination lamp backplate and support arm in accordance with the design; and,

FIG. 5 is a bottom plan view of the combination lamp backplate and support arm in accordance with the design.

The broken lines show the environment in which the article is used and are not considered part of the design claimed. 

The ornamental design for a combination lamp backplate and support arm, as shown and described. 